Mendeleev's law explain
Answers
According to Mendeleev's periodic law, the physical and chemical properties of elements are the periodic function of their atomic mass(weight).
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★ Medeleev's periodic law:-
→ The properties of the element are the periodic functions of their atomic masses.
→ Medeleere arranged the elements in different rows and columns.
→ He classified the elements into 18 vertical column called 'groups' and further sub columns into IA, IB, IIA IIB,.... VIIA VIIB, VIII groups.
→ 7 horizontal rows called periods.
→ He predicted the properties of some undiscovered elements.
→ Isotopes of some elements with different atomic masses were placed in the same position.
→ Position of hydrogen in the periodic table is uncertained.
→ Lathanoids and Actinoids are place outside the periodic table since they could not be accomdated inside the table.
→ Elements of subgroups A and B of a given group had no similarity in their properties.
→ Nobel gases had no place in the old form of the periodic table.
→ Mendeelev's periodic table could not explain the periodicity in properties of elements.